Early this morning, a few minutes after 6, Matt Dudek, Arizona's director of on-campus recruiting and player personnel got UA fans excited with a 14-word tweet.

"Woke up hyped!!! I think today is going to be a big day. #staytuned," Dudek wrote.

He wasn't lying.

The Wildcats landed a commitment early this evening from Keenan Walker, a four-star offensive tackle from Scottsdale Chaparral High School. Walker, listed at 6-feet-6-inches and 280 pounds, is ranked as the ninth best offensive tackle prospect in the country by the Scout.com recruiting service.

The offensive tackle took to his Twitter account to make the news official:

Walker held offers from — get this — Arizona State, Nebraska, Ohio State, Texas, Texas A&M, UCLA, USC and others. He's expected to be on campus tonight for an unofficial visit.

Former Chaparral head coach and current UA tight ends coach Charlie Ragle served as the lead recruiter for Walker.

Rivals.com has Walker ranked as the 152nd best prospect in the country and the 17th best offensive lineman. Walker is the fifth member of the 2015 recruiting class to commit to the UA and third from the state of Arizona.

He's the first four-star prospect of the class. All five of the UA's commitments are from either Arizona or California.

It's the second straight year the Wildcats have landed a big-time commitment from Chaparral. Last year it was tight end Trevor Wood, who pledged to Arizona over offers from Alabama, Michigan, Oregon and others.